Oussama Assaidi (Berber languages: ⵓⵙⴰⵎⴰ ⴰⵙⴰⵄⵉⴷⵉ; Arabic: أسامة السعيدي; born 15 August 1988) is a Moroccan former footballer who played as a winger.

After failing to earn a contract with AZ, he played with second tier club FC Omniworld and then De Graafschap before joining Heerenveen in 2009.

His performances at the Abe Lenstra Stadion earned him international recognition with the Morocco national team and also attracted the attention of bigger European clubs.

He struggled to break into the first team at Anfield, however, and joined Stoke City on loan for the 2013–14 and 2014–15 seasons, before being sold to Al-Ahli Dubai in January 2015.

After two seasons with the club from Almere, where he scored 3 goals in 36 games, he moved to De Graafschap to play in the Eredivisie, the top flight of Dutch football, in the summer of 2008.

[5] On 17 August 2012, English Premier League side Liverpool agreed a deal to sign Assaidi for an undisclosed fee thought to be in the region of £2.4 million.

[10][11] Due to impressive performances from young fellow wingers Raheem Sterling and Suso, however, Assaidi failed to break through to Liverpool's regular starting line-up, making 12 appearances in 2012–13 of which four were in the league.

[15] He played in the next round of the League Cup Tranmere Rovers after coming on as a 61st-minute substitute, he provided an assist for Peter Crouch to secure a 2–0 victory.

[28] On his return to Liverpool, Assaidi was sold to UAE Arabian Gulf League side Al-Ahli Dubai for a fee reported to be in the region of £4.7 million.

[33] Assaidi departed Twente at the end of the 2018-19 season, he then started his own sports gym in Morocco called “PlayersHome” with Kamal El Makrini.

[36] In the final tournament in Gabon and Equatorial Guinea, he started Morocco's opening game at the Stade d'Angondjé in Libreville, being replaced by Adel Taarabt at half-time in a 2–1 loss to rivals Tunisia.